湖北农业科学2025，Vol.64Issue(1)：1-6,6.DOI:10.14088/j.cnki.issn0439-8114.2025.01.001
遮阴处理对玉米子粒败育及产量的影响
Effects of shading treatments on the kernel abortion and yield of maize
摘要
Abstract
Using maize(Zea mays L.)hybrid varieties Zhongyan 1603 and Zhongyan 698 as test materials,different shading duration treatments were set under field planting conditions to explore the effects of different shading treatments(30%shading rate)on maize kernel abortion,yield and its components.The results showed that in terms of kernel abortion,yield and its components,Zhongyan 698 was more sensitive to shading treatments than Zhongyan 1603.The proportion of kernel abortion increased with the increase of shading duration.At the stage of total small flowers to fertilize small flowers and the stage of fertilized small flowers to grains,shading stageⅢ(the 8th leaf stage to the 18th leaf stage shading)and shading stageⅣ(the 8th leaf stage to the silking stage shading)had sig-nificantly higher abortion rates than the non shading control(P<0.05).In the mature period,the ear length,ear diameter and the ker-nels per row decreased with the increase of shading duration,and the difference between shading stageⅣand the non shading control was significant(P<0.05),while shading had no effect on the number of rows per ear.The yield,thousand-grains weight and number of grains per spike under shading treatments were lower than those of the non-shading control,and the differences between the shading stageⅢ,Ⅳand the non-shading control were significant(P<0.05),while shading had no effect on the number of harvested panicles.The correlation analysis results showed that the shading duration and the interval days between flowering and silk emergence were sig-nificantly positively correlated with the abortion rates(P<0.01).In addition to the number of harvested panicles,the yield indicators were significantly negatively correlated with the number of shading days and the interval days between flowering and silk emergence(P<0.01).This indicated that with the increase of shading,the interval days between flowering and silk emergence of maize were ex-tended,and the kernels abortion rate after silk emergence was increased,resulting in a decrease in ear length,ear diameter and the kernels per row,thereby reducing thousand grain weight,grains per spike and yield.关键词
玉米(Zea mays L.)/遮阴/子粒败育/产量Key words
maize(Zea mays L.)/shading/kernel abortion/yield分类
农业科技引用本文复制引用
常晓,王小博,刘柏林,杨兆生,李健..遮阴处理对玉米子粒败育及产量的影响[J].湖北农业科学,2025,64(1):1-6,6.基金项目
新疆维吾尔自治区自然科学基金项目(2021D01A196) （2021D01A196）
安阳市科技攻关项目(2022C01NY014) （2022C01NY014）
